<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片区域-->
    <el-card>
      <!--搜索与添加区-->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList()">
            <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!--添加用户的对话框-->
      <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
        <!--对话框内容主体区域-->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
        </el-form>
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
        </el-form>
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
        </el-form>
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="手机号" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
         <el-button @click="addDialogVisible = false">取 消</el-button>
         <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>

      <!--用户列表区-->
      <el-table :data="userlist" border stripe>            <!--border是加表格的边框线,stripe是隔行变色的效果-->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template v-slot="scope">
            <el-switch v-model="scope.row.mg_state" active-color="#13ce66" inactive-color="#ff4949"
                       @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template v-slot="scope">
            <!--修改-->
            <el-tooltip effect="dark" content="修改" placement="top" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="mini"
                         @click="showEditDialog(scope.row.id)"></el-button>
            </el-tooltip>

            <!--删除-->
            <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="mini"
                         @click="removeUserById(scope.row.id)"></el-button>
            </el-tooltip>

            <!--分配角色-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!--分页区域-->
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </el-card>

    <!--修改用户的对话框-->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
      </el-form>
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
      </el-form>
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
              <el-button @click="editDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="editUserInfo">确 定</el-button>
              </span>
    </el-dialog>

    <!--分配角色的对话框-->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户:{{ userInfo.username }}</p>
        <p>当前的角色:{{ userInfo.role_name }}</p>
        <p>分配新角色:
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRole">确 定</el-button>
  </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    //验证邮箱的规则
    let checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/          // 验证邮箱的正则表达式
      if (regEmail.test(value)) {
        return cb() // 合法邮箱
      }
      cb(new Error('请输入合法的邮箱'))
    }
    //验证手机号的规则
    let checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的手机号码'))
    }


    return {
      //获取用户列表的参数对象
      queryInfo: {
        // 搜索值
        query: '',
        //当前的页数
        pagenum: 1,
        //当前显示多少页
        pagesize: 5
      },
      // 存放用户的数据和数量
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //添加用户表单的验证规则对象
      addFormRules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 2, max: 10, message: '长度在 1 到 6 个字符', trigger: 'blur'}
        ],
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      //控制修改对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象保存
      editForm: {},
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要配分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      rolesList: [],
      //已经选择的角色id值
      selectRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    //获取用户列表
    async getUserList() {
      const {data: res} = await this.$http.get('users', {params: this.queryInfo})
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.userlist = res.data.users
      this.total = res.data.total
    },
    //监听 pageSize改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()       /*在从新获取数据*/
    },
    //监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听 switch 开关的状态的改变
    async userStateChanged(userinfo) {
      const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      } else {
        this.$message.success('更新状态成功!')
      }
    },
    //监听添加用户对话框关闭的事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()       /*element-ui的表单重置方法resetFields()*/
    },
    //点击确认按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return
        } else {
          const {data: res} = await this.$http.post('users', this.addForm)
          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败!')
          } else {
            this.$message.success('添加用户成功!')
            //隐藏添加用户的对话框
            this.addDialogVisible = false
            //刷新用户列表
            this.getUserList()
          }
        }
      })
    },
    //展示修改用户的对话框
    async showEditDialog(id) {
      this.editDialogVisible = true
      const {data: res} = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败!')
      } else {
        this.editForm = res.data        /*把查询到的数据保存到一个editForm表单中*/
      }
    },
    //监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      //预验证
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          return
        } else {
          const {data: res} = await this.$http.put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
          if (res.meta.status !== 200) {
            return this.$message.error('更新用户失败！')
          } else {
            //关闭对话框
            //刷新疏浚列表
            //提示修改成功
            this.editDialogVisible = false
            this.getUserList()
            this.$message.success('更新用户成功！')
          }
        }
      })
    },
    //根据id删除对应的用户信息
    async removeUserById(id) {
      //弹框询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      //如果用户确认删除，则返回值为字符串 confirm
      //如果用户取消删除，则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除!')
      } else {
        const {data: res} = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败!')
        } else {
          this.$message.success('删除用户成功!')
          this.getUserList()
        }
      }
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      //在展示对话框之前，获取所有的角色列表
      const {data: res} = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    //点击确认按钮分配角色
    async saveRole() {
      if (!this.selectRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectRoleId})
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }
      this.$message.success('更新角色成功！')
      this.getUserList()
      // this.$message.success('获取用户列表成功！')
      this.setRoleDialogVisible = false
    },
    //监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectRoleId = ''
      // this.userInfo = []
    }
  }
}
</script>

<style lang="less" scoped>

</style>